Arkit

How to capture advanced shaders using ARKit’s ARSCNView snapshot feature

How to capture AR frames as UIImages at 30FPS in ARKit.

ARKit x CoreData : How to store and load ARReference Images from the internet.

A SCNTechnique requires a .scn model filetype.

Short and sweet, .dae, .abc or other files will not register SCNTechniques. You…

How to calculate the distance from the camera to a node in ARKit.

SCNRenderer Error Message : “vertexFunction functionType is not a MTLFunctionTypeVertex”, when applying SCNTechnique.

ARKit Tutorial: How to attach Custom Variables to a Metal Shader & its associated SCNProgram through a TimedStroke Shader iOS 12.

The Problem

According to Apple:

Custom Variables

ARKit Theory: ARCamera Point of View.

Consider the following picture.

ARKit: How to check if a node is on your screen.

Use the following line of code.

var isNodeInPointOfView:Bool = sceneView.isNode(YOUR_NODE, insideFrustumOf: sceneView.pointOfView!)